<%@page import="com.zhuoshi.dao.ManagerDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	ManagerDao dao = new ManagerDao();
	String username = request.getParameter("username");
	boolean flag = dao.exists(username);
	if(flag){
		response.getWriter().print("此用户已存在");
	}else{
		response.getWriter().print("此用户不存在");
	}
%>
